/*
 * Copyright 2004 original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jbfilter.jsp;

import org.jbfilter.core.FilterComponent;
import org.jbfilter.core.PropertyAccessible;

public class PropertyPathHandler {

	private String propertyPath;
	private boolean propertyPathSet;
	private boolean propertyPathChanged;
	
	public void setPropertyPath(String propertyPath) {
		this.propertyPath = propertyPath;
		propertyPathSet = true;
	}
	public boolean isPropertyPathSet() {
		return propertyPathSet;
	}
	public String getPropertyPath() {
		return propertyPath;
	}
	public void handlePropertyPath(FilterComponent<?> fcomp) {
		if (!propertyPathSet || !(fcomp instanceof PropertyAccessible)) {
			return;
		}
		PropertyAccessible pAcc = (PropertyAccessible)fcomp;
		String oldValue = pAcc.getPropertyPath();
		pAcc.setPropertyPath(propertyPath);
		if (	(oldValue != null && !oldValue.equals(propertyPath)) ||
				(oldValue == null && propertyPath != null)) {
			propertyPathChanged = true;
		}
	}
	public boolean isPropertyPathChanged() {
		return propertyPathChanged;
	}
}
